Why are some "impervious to the siege of reason"?

“Automatic consistency,” explains Psychology professor Robt. Cialdini. “Sometimes it is not the effort of hard, cognitive work that makes us shirk thoughtful activity but the harsh consequences of that activity. Sometimes it is the cursedly clear and unwelcome set of answers provided by straight thinking that makes us mental slackers. There are certain disturbing things we simply would rather not realize. Because it is a preprogrammed and mindless method of responding, automatic consistency can supply a safe hiding place from troubling realizations. Sealed within the fortress walls of rigid consistency, we can be impervious to the siege of reason.” In short, we might have to change if we allow ourselves to think. Therefore, we shouldn’t assume such people are either lazy or incapable of cognitive thought. Are some who post here “impervious to the siege of reason” because they fear the change that results from cognitive thought?